3B5N

Structure of the yeast plasma membrane SNARE complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.206 

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This is version 1.2 of the entry. See complete history


Literature

The Structure of the Yeast Plasma Membrane SNARE Complex Reveals Destabilizing Water-filled Cavities.

Strop, P.Kaiser, S.E.Vrljic, M.Brunger, A.T.

(2008) J Biol Chem 283: 1113-1119

  • DOI: 10.1074/jbc.M707912200
  • Primary Citation of Related Structures:  
    3B5N

  • PubMed Abstract: 
  • SNARE proteins form a complex that leads to membrane fusion between vesicles, organelles, and plasma membrane in all eukaryotic cells. We report the 1.7A resolution structure of the SNARE complex that mediates exocytosis at the plasma membrane in the ...

    SNARE proteins form a complex that leads to membrane fusion between vesicles, organelles, and plasma membrane in all eukaryotic cells. We report the 1.7A resolution structure of the SNARE complex that mediates exocytosis at the plasma membrane in the yeast Saccharomyces cerevisiae. Similar to its neuronal and endosomal homologues, the S. cerevisiae SNARE complex forms a parallel four-helix bundle in the center of which is an ionic layer. The S. cerevisiae SNARE complex exhibits increased helix bending near the ionic layer, contains water-filled cavities in the complex core, and exhibits reduced thermal stability relative to mammalian SNARE complexes. Mutagenesis experiments suggest that the water-filled cavities contribute to the lower stability of the S. cerevisiae complex.


    Organizational Affiliation

    Howard Hughes Medical Institute and Department of Molecular and Cellular Physiology, Stanford University, Stanford, California 94305, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Synaptobrevin homolog 1AEI61Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SNC1
Find proteins for P31109 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P31109 
Go to UniProtKB:  P31109
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein SSO1BFJ69Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SSO1
Find proteins for P32867 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32867 
Go to UniProtKB:  P32867
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Protein transport protein SEC9CGK70Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SEC9HSS7
Find proteins for P40357 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40357 
Go to UniProtKB:  P40357
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Protein transport protein SEC9DHL64Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: SEC9HSS7
Find proteins for P40357 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P40357 
Go to UniProtKB:  P40357
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.206 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.956α = 90
b = 48.113β = 97.77
c = 110.265γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
Blu-Icedata collection

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-11-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description